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A horizontal stretched string, fixed at 2 ends, is vibrating in its fifth harmonic according to the equation y(x,t)=(0.01m)sin[(62.8/m)x]cos[(62.8/s)t]. Assuming pi=3.14, the correct statement(s) is (are):
a) The number of nodes is 5.
b) The length of the string is 0.25m.
c) The maximum displacement of the midpoint of the string, from its equilibrium position is 0.01m.
d) The fundamental frequency is 100Hz.

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